Brick-kiln



3 Sheets-Sheet 1.

(No Model.)

T.I L. MYERS.

vBRICK KILN.

AN DREW BLRAHAM. PHDTO-UMAWASHINGTUMDL.

(No Model.) s sheets-sheen 2.

I T. L. MYERS.

BRIGK KILN.

] No. 546,934. Y. Patented Sept. 24, 1895.

ANDREW ELGRAHAM. PNUTD'UIHQWASHINETUN .D c.

(No Model.; 3 'sheetssheen 3.

T. L. MYERS. BRICK KILN.

N0. 546,934. I Patented SeptfZ/l, 1895.

ANDREW B GHAHAMPHOTO umn wAsHxNG'ION-0x1 man rl-tres Far-nm anion.

THOMAS L. MYERS, OF ST. LOUIS, MISSOURI.

BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 546,934, dated September 24, 1895.

Application led November 22, 1894. Selial No.. 529,573. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS L. MYERS, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Brick-Kilns, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, wherein- Figure l is a longitudinal sectional View taken on the linesa ato e e, Fig. 2. Fig. 2 is a horizontal sectional view on the lines A A to E E, Fig. l; and Fig. 3 is a cross-sectional v1ew.

My invention relates to a new and useful improvement in brick-kilns of that class where the ire-boxes are arranged preferably in batteries on each side of the kiln proper, the draft being so arranged as to pass upwardly and downwardly through the bricks to be burned, said draft being regulated by suitable dampers, hereinafter described.

Other features of the invention reside in the peculiar construction of the kiln and the arrangement and location of the draft-fines.

In the drawings, A indicates two underground draft-flues, which are divided by a central partition-wall extending up nearly to the top of the crown of the kiln proper to form the curtainwall B, substantially dividing the kiln into two longitudinal compartments. The flues A open into the bottom of these iongitudinal compartments of the kiln lon each side of the curtain-wall, preferably through openings in a permanent tile door O.

D indicates the tire-boxes arranged at the sides of the kiln, said fire-boxes being of ordinary construction, and E and F are two exit-fines leading from the inner cnd of the fire-boxes. Flue E extends upward through a bag-wall and discharges into the compartments of the kiln near the crown thereof, so that the product passing therethrough will be deflected across the crown. Flue E. is formed with a pocket e, which opens to the exterior and is closed by a plug e', for obvious reasons, said pocket holding a slide damper-plate G, which is adapted to be moved across the opening of flue E at certain times in the operation of the kiln to close said ue. It is desirable that a shoulder be formed on the bag-wall, upon which this damper-plate may rest when in an operative position. The inner ends of the tire-boxes are formed with a bridge-wall D, and the crown H upon which the bag-wall is supported forms, in conjunction with thebridge-wall, a downdraft-iiue, which opens into transversely-disposed short fines I, which short transversely-disposed ues open into the longitudinal compartments of the kiln through the openings in a permanent tile flooring J, which fiooring J is preferably on a horizontal plane with the iooring O. The crown-wall H, forming the substructure for the bag-wall, is formed with apocket into which is received a damper-plate K, said damper-plate being adapted to be drawn across the doWndraft-flue in certain operations ofthe kiln,and, resting upon the bridgewall D', close the downdraft-flue- L indicates supplemental dues arranged so as to open into the short fines I, and when two or more kilns are arranged in battery flues L serve to conduct the heated air from one kiln into another for the purpose of initially drying the newly-charged kiln. It will of course be understood that flues L are controlled by suitable damper-plates, so as to prevent the deliection of the draft from the kilncompartments during the firing of a charge.

It will also be understood that flues A lead to a suitable stack and are controlled by damper-plates to open or close the draft through the stack, as desired. The crown of the kiln is formed with openings for the purpose of cooling the kiln after the tiring of a charge, as is common, and suitable peepholes are arranged in the sides thereof for understood purposes. The side and end walls are braced by suitable stay-beams and truss-rods, which are preferably anchored in the ground and have their upper ends connected by cross-rods to tie the beams in place, as is usual.

The operation of the kiln is as follows: Assuming that it is suitably charged With green brick and that fires are in the fire-boxes D, the damper-plates and iues L are arranged so as to close the same, and the damper-plate in one of the lines A-say the left-hand one-is arranged so as to open said flue into the stack, while the damper-plate in right-hand iue A is arranged so as to close communication between the ue and the stack. The damper'- plates G on one side of the kiln are shoved ICO in so as to close the flue E through the bagwall, and the damper-plates K on the same side ot' the kiln are shoved into their pockets through the tire-box door, opening the downdraft-liue F. The damperplates G on the opposite side of the kiln-say the left-hand side ot Fig. 3-are pulled outwardly, so as t'o unclose ilue E up through the bag-wall, and the damper-plates K on the same side of the kiln are pulled over the opening to the downdraft-flue, so as to close flue F. The course of the products of combustion, under this arrangement of the damper-plates, is that on the left-hand side of the kiln they pass up through the fiue E inthe bag-wall and strike against the crown of the kiln on that side, while the products of combustion from the right-hand lire-boxes, not tinding access through tine E, will be drawn downwardly through the downdraft-i'lue F beneath the tioor J of the kiln, whence they pass upwardly through the right-hand kiln compartments over the curtain-wall, meeting the products of combustion from the left-hand tire-boxes, and passing downwardly through the bricks and floor C will reach the left-hand flue A, whence they are drawn out by the stack. After the charge has been tired sutiiciently, under this arrangement left-hand tine A is closed and right-hand line A is opened to the stack. Damper-plates G on the left are forced in, closing liuc E, and damper-plates K on the same side are pushed into theirpockets, opening iiue F, while damper-plates G on the righthand side are pulled intotheir pockets, opening tine E, and the damperpIates K pulled over the opening to flue F to close the downdraft-liue on the right-hand side of the kiln. This arrangement of the damper-plate reverses the course before taken by the products of combustion in passing through the bricks to be burned, and the products now pass in the left-hand compartment upwardly and over the curtain-wall, and in the right-hand compartment downwardly into the right-hand ilneA in the same manner as the passage ofthe products of combustion before described. It will thus be seen that the charge of bricks in each compartment is subjected to an updraft and a downdraft of the products of combustion in such manner that the charge is burned evenly without having any intense heat at any one point in the kiln, which would tend to burn the charge more at one point than another. After the bricks have been sufficiently burned, the fines A may be out ott from their stack and the ilues L opened into an adjoining kiln, when the heat from the burned kiln can be taken through the titles L into the newly-charged kiln to dry the green bricks, preparatory to submitting them to the intense heat of the tires.

I have illustrated in the drawings a convenient manner of building a kiln in which is embodied my invention, but it is obvious that there are many slight changes which could bo made, perhaps advantageously, in the construction, bnt; which would not depart from the nature and principle of my invention. Therefore, I desire to be understood as having included in my invention all such minor changes. Also, in the description of the operation, I have referred to the right and left; hand side ot' the kiln in order to illustrate the construction shown in the drawings, and it is obvious that its operation could be changed at will, according to the ideas of the operator.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a brick kiln, the combination with tire boxes arranged on opposite sides of the kiln, of a central curtain wall,dampered exit ilnes, located centrally in the kiln and on opposite sides of the curtain wall, the base of which forms the dividing wall for the tlues, bag walls on opposite sides of the kiln, forming npdraft titles, bridge walls forming down'dral't lines, and dampers in the up and down-draft; flues substantially as described.

2. In a brick kiln, the combination willi tiro boxes arranged on opposite sides of the kiln, of a curtain wall in the middle of the kiln dividing the same into substantially two compartments which are connected at the top, bag-walls forming updraft ilues from the tire boxes and discharging near the crown of the kiln, bridge walls forming down draft tlues which open beneath the lloor of the kiln, suitable damper plates for the up and down draft flues, two exit tlues beneath the kiln floor, and on each side of the curtain wall, and supplemental exit flues between the fire boxes and exit flues, substantially as described.

In testimony whereof I hereunto affix my signature, in presence of two witnesses, this 24th day of July, 189i.

THOMAS L. MYERS. Witnesses:

F. R. CORNWALL, HUGH K. WAGNER. 

